No it would have been done when it was new. It was not uncommon to add leather to 91-94 Cruisers by dealers to original cloth interior vehicles. Tan/Oak/Brown leather did not come out until the 1995 model. Yours is definitely an original cloth interior door card that was modified with the...
That is not a stock U.S. spec 93 door card in the photo. That is a modified door panel with leather. You won't probably find an exact match. The 95-97 leather door cards are different in color and slightly different in shape on the top. The 93-94 in brown will have velour coves where...